Glass-tank.



R. S. PEAS &- J. A. SWEET.

GLASS TANK.

APPLICATION FILED NOV. 7, 190B.

tented Aug. 23

To all whom it may concern} a signed for the struction adapted tomaintain the glass at a uniform heat throughout the interior of thetank, means whereby a portion of the in continuous.communication withthe body of the tank is presented fonidrawing UNITED sT trEs PATENT,orrron.

Anrnnn M. en, 'rnusrnn, or rrr'rsnune, PENNSYLVANIA.

GLASS-TANK.

. Specification of Letters latent. Pat t Aug; 235, 1 19,

Application filed November 7, 1903,- Serial It'd- 461,483. I

' Be it known that we, ROGER S. Pnasnand citizens of the United States,residing at. Hartford City, 'in the county. of Blackford an'd State ofIndiana,

have invented certain new and useful Improvements in Glass-Tankacf'which the had therein to the accompanying drawing.

Uur inventionrefers to improvements'in glass melting tanks for use tureof window glass and is particularly depurpose of providing a conglass*operations, means embodying lateral tank extensions for containing sucha communieating body of glass and for maintaining it heated, and tovarious other features of construction and improvement Ifullyhereinafter described. The particular features of the improvementconsist in one or more laterally .dis-

glass in the main tank will flow thereinto on the same level, the gasesof combustion will terior, the glass will posedtankextensiohs soconstructed that the circulate from the'extensions to the tank in.-

I mental heaters and is adapted for vertical the next operation, withincidental drawing through'the cover, and whereby the construction isadapted for manipulation of the'glass drawing apparatus, removal of thev surplus and preparation-of the surface fo'r for heating of the drawingtools, etc.v

In the drawings illue irating "the inven tion: Figure I is a horizontalsectional view through the ,entire tank and its extension chambers. Fig.2 is an enlarged vertical sectional view indicated by the line IIL'IL'ofFig. 1. Fig. 3 isa horizontal sectional 'view on, the'line III. III. ofFig. 2. Fig. is a vertical sectional View on the line IV; IV. of

- tively,xwith a charging opening 5 and any I Fig. 2, illustrating thedrawing operation;

- 2 represents' the main tank, of well known construction, usuallyrectangular 1n form, having side and end walls 3 and 4, respecreferencebeing in the manufac-- main as "shall be more I preferably arched.

be heated by supple."

provision It suitable means for supplying fuel to the interior as gassupply pipes 6 6 having jet nozzles extending into the .frbnt portion ofthe furnace through-the side walls, -;as indicated. Ordinarily heat isthus impartedto: the contents of the tank at the front portion the heatextending throughout the enonly,

A. swam, or nanrro'nncrrr, INDIANA, assreuons no tire interior byradiation, the result of which is that the glass in the farther end ofthe tank is not ordinarily maintained at as high temperature asthat inthe forward portion.

For the purpose of providing means for 7 easy and convenient removal bydrawing of portions. of theglass, we provide tank ex tensions a atsuitable pointsaroun d the tank, preferably at its other end, extendingoutwardly beyond the end and side walls as shown in.Fig. 1, which tankextensions are provided with floors 7 substantially on the same generallevel fa's the floor of'the main tank .(see Fig. 2), andb'ounded withinthe side walls 8 and an end wall.9.'- The tank extensions are covered atthe portion adjacent'to the main tank horizontal roofs or cover portions10, the covers sloping upwardly and outward-ly toward the outer end asindicated at 11, whereby the inner cover is located somewhat closelyadjacent to the surface 6 of the glass for the drawing operation, and isprovided with a circular opening'12for such purpose. The cavity beneaththe outer portion of the cover is also thusenlarged vertically forclearance of the fuel-supplying burners,;insertion of manipulating toolsfor handling the rings, removal-of The burners are indicated bythenumeral 13', referring to any suitable fuel-supplying device,- as airand; oil burners, mserte impi r'ities, ,etc., and the insertion forheating of the drawing tools. I 1

through openings lt at any suitablepoint 1' or oint's, and preferablydirected inwardly an downwardly toward the point 0-,.indieating thecenter of the drawing operatlon.

Any desired number of such jets may be introduced through the end orside ,walls orboth, and when so arranged will operate tokeepthe-contents bf the; tank extensions at any desired heat for drawing,supplement. ing the heat the main tank, while the.

amount of fuel discharged m ay be accurately controlled, and varied fromtime to time through one or more of the burner jets for the purpose oftemporary rapid heating iof the glass as desired.

- Also, aftereach drawing operation, the action-0f the several jetsbeing directed to- A ward the drawing point c, will serve to not onlyquickly melt the surplus of glass falling back into the main body afterseverance T from the drawing cylinder, but will act to force itoutwardly into .the main tank and away from the drawing point.

One or more openings 15 are provided through the side or end walls,covered by a suitably designed tile 16, and adapted to ,receive one ormore drawing tools 17 into the interior of the tank extensions forpreliminary heating as is ordinarily required by a separateheatingfurnace for such purpose. These openings are also. of advantage for theinsertion of a rod or other implement when desired for any ,purpose.

i The furnace as thus constructed is adapted for drawing cylindersupwardly through opening 12, but for the purpose of facilitatin-gsuchoperation, protecting the cylinderin -lprocess from surroundingimpurities, variations in the heat, air currents, etc., and for insuringa continuous supply of heated glass, we preferably employ a verticallyadjustable ring 18 of fire clay or other vitreous material arranged forraising and lowering through opening 12 by any suitable means andpreferably pro'videdwith a separately adjustable cover 19 adapted tovretain theheat whenthe apparatus is not in use, by- -any suitable means,as indicated in Fig. 2. 45

When the glass is drawn by one of the usual drawing tools employed inthis art for the purpose of making a mechanically drawn 'cylinder,'=thering 18 is lowered until its lower portion is immersed below the surfaceof the glass as in Fig. 4:, after which the tool is lowered within itand the drawing opera-- tion proceeded with in the well known-man- 'ner;

able construction or design maybe employed as shown and describedin ourcompanion application filed herewith Serial No. 461,484,

and it will be understood that the furnace construction is available andadapted for' use with any of such various additional elements withoutimpairing its usefulnessjand advantages. V

We are aware that not broadly. new

toprovide means for maintaining a body of glass in communication with amain supply within the tank or other containing vessel, but believe weare the first to construct a tank having a lateral extension whereinopen communication is maintained above the surface of the glass with themain interior and having the various means which we have shown anddescribed for furnishing fuel in combustion therethrough, with theseveral other features of construction and advantage herein set forth.

It will be understood that the construction may be greatly changed ormodified by the skilled .mechanic or builder,.or adapted to otheroperations than those of drawing cylinders, and we therefore do notdesire'to be limited to the specifio construction herein set forth, butwish tovinclude all such changes 'or variations within the scopeof thefollowing claims.

- What we claim is 1. A glass tank having an extension in opencommunication with the interior of the tank, closed against outwardcirculation of the gases, provided with a covering closely adjacent tothe surface of the glass at its inner portion and sloped upwardly at itsouter portion and havin a drawing opening, the side walls of saiextension having openings therethrough leading underneath the upwardlyslopin portion of the covering, and coverin s or said openings,substantially as set f ort 2. A glass tank having an extension in opencommunication with the interior of the tank, -closed against outwardcirculation of the gases,-provided with a covering closely adjacent tothe surface of the glass at its inner portion and sloped upwardly at itsouter portion and having a drawing opening, the

side walls of said extension having openings therethrough leadingunderneath the up wardly sloping portion of the covering, fuelinlet'devices extending inwardly throu h some of said openings, andcoverin s for t e others of said openings, substantia ly as set forth.

3. The combination with a lass tank, of a horizontally arrangedextension thereof in open communicationwith the interior ofthe tank,closed against outward circulation of gases provided with a supportingbottom j and rectangular side and end walls having If desired one ormorerings of any suit covered openings therethrough, a coverin having astraight and inclined portion, 'an fuel supply devices arran ed tofurnish fuel in. combustion downwar ly and inwardly toward-the tank,substantially as set forth.

4..The combination with a glass tank, of ahori'zontally arrangedextension thereof in open communication with the interior of the tank,closed a ainst' outward circulation of bottom having gases provide witha supporting and rectangular side and end wal s covered openingstherethrough, a Covering In testimony whereof we aifix our signahaving astraight portion provided with a tures in presence of two witnesses.

- drawing opening and a verticall adjustable ring, an outwardly andupwardly inclined end portion, 'and fuel supply devices arranged tofurnish fuel in combustion down- Witnesses: I Wardly and inwardly towardthe tank, sub- FRED W. VVILLMAN stantially as set forth. DAVID C.CALDWELL.

